How would I become a good photographer?

I've been wanting to be a good or maybe a decent photographer, is there a technique? I have a Nikon coolpix L105
>>> How would I become a good photographer?

I have a nikon P90 advice on shots please?

Hi I'm looking to start taking pics again, how do you take up close pictures with a hazy background?
>>> I have a nikon P90 advice on shots please?

How to Better the audio of my videos when at live shows?

I have an Nikon Coolpix L110 and when ever i try to film live concerts it just comes out Crackly.

here's a video:
http://www.youtube.com/watch?v=y7s8a_LzcT0 skip to 1:15
>>> How to Better the audio of my videos when at live shows?

What Would be a Suitable Camera for Me?

What are some really good cameras? I am an aspiring photographer, but I have your run-in-the-mill crappy camera. Next summer, I will be taking a school trip to Dublin, London, and Paris. I want a great quality camera for my trip but don't know where to look.
This is my ideal camera:
http://www.thephoblographer.com/wp-content/uploads/2013/01/Chris-Gampat-The-Phoblographer-Nikon-D5200-S1-and-J3-first-impressions-CES-2013-1-of-17ISO-16001-180-sec-at-f-4.0.jpg

Is that a good camera? Or do you think I should get a different one?
>>> What Would be a Suitable Camera for Me?

Which camera would be my best choice?

I'm under a budget because I have to save for the camera by myself and i'm not really patient. Oh, i'm not an avid photographer, just some simple photography like sunsets, flowers, etc.

The four cameras that caught my eye are;

Canon PowerShot XS500
Olympus E-420
Nikon Coolpix P510
Nikon D3000
>>> Which camera would be my best choice?